Greed has screwed over lots of people, and for lots of money. I've been dipping more into alts recently (on PancakeSwap mostly) and when I can be profitable with one I pull out my initial investment plus a little extra, and then leave a bit of profit in the token if I want to go for the whole 100x/moon thing. If a token is really going to moon then you can make a good profit even with a very small amount (for example if I can make 100% ROI on my $25-$30 investment and I really want to take a small shot at the moon, I might leave $5-$10 of profit in there). As I improve and build a larger bankroll, maybe I can get to a point where I'm saving $15-$20 on those. Still, I agree that greed will usually end up screwing you if you're chasing those 100x profits. Best to set a profit target and stick to it. Then, if nothing else, leave a bit of profit in there to chase the moon shot. That's my opinion anyways..